T Level Health, Core B core science concepts. Template adapted from Canva.com.
B1.10 How the surface area to volume ratio and additional factors affect the rate of exchange and give
rise to specialised systems:
• the surface area must be large in comparison to the volume for efficient exchange
• where the surface area is small compared to the volume, specialised exchange and transport
mechanisms are required to maximise the rate of exchange
• how additional factors affect the rate of exchange:
o diffusion distance
o temperature
o metabolic rate
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